Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.17 | 0.24 | ||
| Si | - | 0.40 | ||
| Mn | 0.80 | 1.15 | ||
| P | - | 0.035 | ||
| S | - | 0.035 | ||
| Cr | - | - | ||
| Ni | - | - | ||
| Mo | - | - | ||
| Al | - | 0.020 | ||
| B | 0.0008 | 0.0050 |
Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 721 (≥) | 356 (≥) | 33 | 34 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 263 (≥) | 261 (≥) | 22 | 11 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 433 | 632 | 291 |
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